This 24K gold plated brass Nunn Design bangle is exquisite. It has a 8.1mm or approx. 5/16 inch channel that is about 8 5/8 inches long. Therefore, use our 2x10 inch Copper sheets to have enough length to fully wrap the circumference. These bangles are beautiful with our Patina Copper or Embossed Patina Copper sheets set into the channel. Use E-6000 glue for best results. These look fabulous on your wrist in multiples of two and three.